She refers to him as either "Arisawa-kun" or simply "Arisawa", while Maya went out her own way calling him by his first name.

Then again, with them being teachers, Inami won't really have a say as to how they'll call him... or whatever proposition they have for him.

__________________

"You cannot be bad at watching a movie. You cannot be bad at listening to an album.
...But you can be bad at playing a videogame, and the game will punish you and deny you access to the rest of the videogame."